What day of the week is cheapest to ???????????? on Southwest Airlines? Summary 1-833-522-9070. ???????????? ???????????????? ???????????????????????????????????????? ???????????????? ???????? ???????????? ???????? ???????????????????????????????????? ???????????????????????????????? ???????????? ???????????????????????????????????? ????????????????????????????????， ?????????????????... https://www.devex.com/people/what-day-of-the-week-is-cheapest-to-on-southwest-airlines-2113371